Sheave-block.



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Patented Oct. 13,1908.

J. BASS.

SHEAVE BLOCK.

APPLIOATION FILED APR. 7. 190s.

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THE NORRl/S FETER$ C0., WASHINGTON, DA C.

J. BASS.

SHBAVE BLOCKS APPLICATION FILED APR. 7. 1908.

Patented Oct. 13, 1908.

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JOHN BASS, OF MGKEES ROCKS, PENNSYLVANIA. j

SHEAVE-BLOCK.

Specification of Letters Patent.

Patented Oct. 13, 1908.

Application filed April 7, 1908. Serial N o. 425,752.

To all whom it may concern:

Be it known that I, JOHN BASS, a citizen of the United States of America, residing at McKees Rocks, in the county of Allegheny i and State of Pennsylvania, have invented certain new and useful Improvements' in Sheave-Blocks, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to sheave blocks and .its objects are, iirst, to provide a block with a novel gate to facilitate the placing' of a cable in engagement with a sheave; second, to obviate the necessity of passing a cable over a sheave end first; third, to provide a block of strong and durable construction having a hinged gate and novel and effective means for securing the gate to the block.

The present invention relates to certain new and useful improvements upon my sheave block was granted Nov. 13th, 1906.

The improvements upon my patent are, first, a novel latch for holding the gate of the block in a closed position; second, spacing blocks for spacing' the cheek pieces of the block; third, a combined pivot and reinforcing pin; and fourth,'a block having a metallic gate secured to an arm provided with wood cheek pieces, thereby providing a light and durable sheave block. These improvements willA be presently described in detail and then specifically pointed out in the appendedV claims.

Referring to the drawing forming a part of this specification, Figure 1 is a view of one end of a double sheave block constructed in accordance with my invention, Fig. 2 is a view of the opposite end thereof, Fig. 3 is a front elevation of the double sheave block partly broken away, Fig. 4 is a central vertical section of the same, Fig. 5 is a view of one end of a single sheave block, Fig. 6 is a view of the opposite end thereof, Fig. 7 is a front elevation of the same, Fig. 8 is a cen-v tral vertical section of the same, and Fig. 8a is a horizontal sectional view taken on the line w-m of Fig. 8.

Referring to Figs. 1 to 4 inclusive, two reference numerals 1 and 2 designate two oppositely disposed U-shaped metallic plates serving as a shell of the block, the inner wall 3 of each of said plates extendingupwardly and outwardly and terminating in shanks 3a secured in a gate block 4 byr pins- 4%- The shell plates 1 and 2 are separated by spacing for which Patent No. 835,877'

plates 5 and 5a, the latter projecting beyond the bottom of the block and having an opening 5b to receive a cable or hook, while the former is riveted or otherwise secured, as at 5b, to the inner walls 3 of the shell.

Secured to the outer walls of the shell by tie rods 6 are cheek pieces 7 said cheek pieces having chamfered edges 7a, and their confronting faces cut away, as at 7 b to receive the outer walls of the shells 1 and 2.

The tie rods 6 pass through spacer blocks 8 arranged within the U-shaped shell plates 1 and 2, these spacer blocks preventing the shell from collapsing. The cheek pieces 7 are provided with rivets 8b and with pivot pins 18, said rivets and pins being arranged transversely of the grain of the wooden cheek pieces to prevent said pieces from slipping. I

Sheaves 11 and 12 are journaled upon a pin 13 supported. in bearings of the cheek' pieces, and extending through alining openings in the shell of the spacing blocks. This pin 13 is secured at one end by an integral head 14 and at its opposite end by a cotter pin 15.

The outer walls of the shell plates 1 and 2 are provided near their upper ends with two projecting parallel lugsv 16 between which is pivotally secured the lower end of arms 17 by the pivot pins 18. Thesearms are formed with openings 17 a to receive the gate block 4, and are oppositely disposed as shown.

The gate block 4 is formed near each of its ends with a recess 25 to receive the lower ends of the spring pressed latches 26, best shown in Fig. 3 of the drawings. These latches are retained within therecesses by transverse pins 26a carried by t-he gate block 4 and extending through slots provided therefor in the latches 26, these latches extend upwardly to engage the outer sides of the arms 17 and'retain said arms in a closed position.

The ends of the gate block are beveled as at 26b to permit of the arms swinging outwardly as will presently appear;

To each of the pivoted arms 17 is secured by means of rivets 2S, a gate 27, said gates forming extensions of the cheek pieces 7 when closed. These gates are recessed as at 27a and provided with openings 27h, whereby the rivets 28 can be easily placed in position and riveted.

'I he gate block 4 is provided with a cengemir/i tral bearing 29 to receive the head ft) et a beyoml the same, the said gate block proswiveled hoek 31.

Reference will now be had to Figs. 5 to 8 inclusive, illustrating the invention as applied to a single sheave block. YIn these ligures the shell consists ot only a single metallic U-shaped plate l2l having cheek pieces 30a and 31a belted thereto. The upper end et the short wall of the shell is formed with lugs ltabetween which is pivotally secured an arm l? carrying` the gate 27. A pivot pin 182L is employed for pivotally connect ing the arm 17 to the lug' 16a, said pivot pin extending transversely ot' the cheek piece 3l,

The gate block t is shorter than the bleek 4t ot the double sheaye block` and said gate block is retained in engagement' with the longer wall of the shell by pins 235, these pine holding the e'ate block in an opening provided theietor in thc longer arm or wall ot the shell. The oppositeY end ot the gate block is provided with. a spring` latch`r the same as that already described, also with a swivel 37, and it is obvious that the opera tion et my improvement in the single sheaye block is the same as already described in the double block.

l desire to call attention to the tact that the gates can be easily and quickly removed ttor repairs by withflrawing the pivot pins 1S and 1S, and the metallic parts ot my blocks insure greater strength and durabil ity than it wood were used.

The invention as above described is susceptible to such ehanges as are permissible by the appended claims.

Having new described my inyention what I claim as new, is:-

1. In a double sheave block, two oppo sitely disposed U-shaped shell, plates, said shell plates terminating in cylindrical shanks, a gate block supported by said shanks and having tapering ends, cheek pieces embracing the outer walls of said shell plates, spacer blocks arranged in the lower ends of said shell plates, and connected to said cheek pieces, oppositely disposed arms, pivot pins arranged transversely of said cheek pieces for pivotally connecting said arms to the outer walls ot' said shell plates, aid arms having their upper ends provided with openings to receiye the tapering' ends et said gate bleek, a spring pressed latch arranged in each end et said gate bleek for engaging the upper end et each arm, substantially as described.

2. A sheave bleek comprising a metallic shell, perforated lugs carried thereby, an arm pivotally secured between said lugs and provided near its upper end with an open-ing, a gate secured to said arm, a bleek supported on said shell and having` its end received in the openingin said arm and projecting vided in the upper tacey ot lsaid projecting portion with a recess. and a springspresscd latch arranged in said recess and adapted to engage the outer tace ot said arm.

2l. sheave block comprising a Ushapcd shell. an arm pivotally secured thereto and provided 1 au' its upper end with an openingv` a gate block secured to said shell and having one end extending through the open ing in said arm and projecting beyond the `same, said block having a recess formed in the upper tace et said projecting portion, a spring-pressed latch arranged in said recess and adapted to engage the outer tace ot said arm, and a swivel hook carried by said gate block.

it. sheave block comprising a U-shaped shell. a gate block supported b v one wall ot said shell, lugs carried by the other wall ot' the shell at its upper end, an arm pivotally secured to .said lugs and provided near its upper end with an opening to receive one end et sai gate block. said gate block projecting beyond said arm and provided in the upper tace et the end projecting beyond `said arm with a recess, a spring-pressed latch arranged in said recess and engaging the outer tace ot `said arm when the latter is in closed position, a U-shaped sjnu'er-block between the walls ot said shell atl tht` lower end c thereof, cheek pieces embracing the walls otl said shell, and a hook carried by Isaid gate ,j block.

A sheave block comprising a .substantially U-shaped shell having a long and a short Vall, a gate block supported by thc longer wall, an arm hinged to the shorter wall and provided near its upper end with an openingl to receive one end ot the gate block, means carried by the gate block Ator securing said hinged arm in engagen'icnt therewith` and a U-shaped spacer-block mounted between the 'alls ot the shell at the lower ends thereof.

G. sheave block comprising a substantially U-shaped shell having a long and a shortwall` a gate block supported by the longer wall, lugs carried by the shorter wall.y cheek-pieces engaging the outer 'taccs ol `said walls and secured thereto, a reintorcing pin passed through the cheek-piece engaging the shorter wall and through said lugs. a metallic arm hinged to lsaid shorter wall with. said pin as a pivot, and means carried by the gate block fior securing the arm in a closed position.

ln testimony whereo't ,l atlix my signature, in the presence ot two witnesses.

JOHN ltlH.

Vitnesses MAX ll. Snonovrry., K. ll., l'irripun. 

